Cees is, as usual, spot-on. But "it aint the paint, it's prep". I got a very nice $900 paint job about 6 years ago, but it cost me $6,000. The difference, of course, was prep. No rust, just careful blocking and (yes, with apologies) filling of the years of bashing and dings. I started with a clean UCLA professor's car that had endured years of student parking lots and worse. If your 113 is perfect to start with, then you can be proud of a $1k paint job, and consider yourself lucky. Unfortunately mine looked like it had been in a fight and required the rest of my bank account to correct.
Best,
g
'64 230sl, fully sorted out...ooops, spoke too soon